private PublicViewLocationCacheResult LocatePageFromPath(string executingFilePath, string pagePath, bool isMainPage)
{
var applicationRelativePath = GetAbsolutePath(executingFilePath, pagePath);
var cacheKey = new PublicViewLocationCacheKey(applicationRelativePath, isMainPage);
if (!ViewLookupCache.TryGetValue(cacheKey, out PublicViewLocationCacheResult cacheResult))
{
var expirationTokens = new HashSet <IChangeToken>();
cacheResult = CreateCacheResult(expirationTokens, applicationRelativePath, isMainPage);
var cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.SetSlidingExpiration(this.options.CacheExpirationDuration);
foreach (var expirationToken in expirationTokens)
{
cacheEntryOptions.AddExpirationToken(expirationToken);
}
// No views were found at the specified location. Create a not found result.
if (cacheResult == null)
{
cacheResult = new PublicViewLocationCacheResult(new[] { applicationRelativePath });
}
cacheResult = ViewLookupCache.Set(
cacheKey,
cacheResult,
cacheEntryOptions);
}
return(cacheResult);
}
private PublicViewLocationCacheResult OnCacheMiss(ViewLocationExpanderContext expanderContext, PublicViewLocationCacheKey cacheKey)
{
var viewLocations = GetViewLocationFormats(expanderContext);
var expanders = options.ViewLocationExpanders;
// Read interface .Count once rather than per iteration
var expandersCount = expanders.Count;
for (var i = 0; i < expandersCount; i++)
{
viewLocations = expanders[i].ExpandViewLocations(expanderContext, viewLocations);
}
PublicViewLocationCacheResult cacheResult = null;
var searchedLocations = new List <string>();
var expirationTokens = new HashSet <IChangeToken>();
foreach (var location in viewLocations)
{
var path = string.Format(
CultureInfo.InvariantCulture,
location,
expanderContext.ViewName,
expanderContext.ControllerName,
expanderContext.AreaName);
path = PublicViewEnginePath.ResolvePath(path);
cacheResult = CreateCacheResult(expirationTokens, path, expanderContext.IsMainPage);
if (cacheResult != null)
{
break;
}
searchedLocations.Add(path);
}
// No views were found at the specified location. Create a not found result.
if (cacheResult == null)
{
cacheResult = new PublicViewLocationCacheResult(searchedLocations);
}
var cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.SetSlidingExpiration(this.options.CacheExpirationDuration);
foreach (var expirationToken in expirationTokens)
{
cacheEntryOptions.AddExpirationToken(expirationToken);
}
return(ViewLookupCache.Set(cacheKey, cacheResult, cacheEntryOptions));
}
internal virtual ViewEngineResult CreateViewEngineResult(PublicViewLocationCacheResult result, string viewName)
{
if (!result.Success)
{
return(ViewEngineResult.NotFound(viewName, result.SearchedLocations));
}
var page = result.ViewEntry.PageFactory();
var cnt = result.ViewStartEntries.Count;
var viewStarts = new IRazorPage[result.ViewStartEntries.Count];
for (var i = 0; i < cnt; i++)
{
var viewStartItem = result.ViewStartEntries[i];
viewStarts[i] = viewStartItem.PageFactory();
}
var view = new RazorView(this, pageActivator, viewStarts, page, htmlEncoder, diagnosticListener);
return(ViewEngineResult.Found(viewName, view));
}